Please check my sentences gramatically (12.7)

We departed on Friday going to work but the high-way got packed with tons of cars. When I entered the office, I have felt better because they turned on the heater. My house has a heater under the floor like other houses but my office has a heater like a shape of an air conditioner. The internet is an essential thing for our lives. Internet gives some convenient things. In the past, we had to use international calls if we wanted to contact people who live abroad. We can now use video calls, and it is cheap compared to the past. When we try to get information from the internet, sometimes we get uncomfortable. Even though we don't want to get junk information, we can't avoid it. We aren't able to know whether the information is good or bad before we get it. Nowadays, because of SNS, we get news from someone who we don't want to keep in touch with. Internet has advantages more than the downside. The internet has already changed our lives. I'm curious about how internet would change our lives even more.